Optical connection structure
AssigneeNippon Telegraph and Telephone Corporation
InventorsJun Endo, Kota Shikama, Atsushi Aratake
Life of this patent
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Abstract
An embodiment optical body is provided in a propagation path of light between a Si waveguide and an optical fiber. The optical body changes a course of some of radiation mode light, which is emitted from the Si waveguide and propagates in a direction away from an optical axis thereof, to obtain waveguide mode light passing through itself. Thus, the amount of waveguide mode light incident on the optical fiber increases, and the coupling efficiency between the Si waveguide and the optical fiber is improved.
Claims20
An optical connection structure for coupling a first optical waveguide and a second optical waveguide having different mode fields, the optical connection structure comprising:
- an optical body in a propagation path of light between the first optical waveguide and the second optical waveguide and configured to change a course of radiation mode light emitted from the first optical waveguide and propagating in a direction away from an optical axis thereof to obtain waveguide mode light passing through the optical body, wherein the optical body is supported by a bridge body bridging between the first optical waveguide and the second optical waveguide via a support comprising a first support and a second support facing each other along the optical axis of the optical body, wherein the optical body is at first end parts of the first support and the second support and second end parts of the first support and the second support are joined to the bridge body.
An optical connection structure comprising:
- a Si waveguide coupled to an optical fiber, the Si waveguide and the optical fiber having different mode fields;
- an optical body in a propagation path of light between the Si waveguide and the optical fiber and configured to change a course of radiation mode light emitted from the Si waveguide and propagating in a direction away from an optical axis thereof to obtain waveguide mode light passing through the optical body;
- a bridge body bridging the Si waveguide and the optical fiber;
- and
- a support coupled to the bridge body and configured to support the optical body, wherein the support includes a first support and a second support facing each other along the optical axis of the optical body, first end parts of the first support and the second support are joined to the optical body, and second end parts of the first support and the second support are joined to the bridge body.
An optical connection structure comprising:
- a first optical waveguide coupled to a second optical waveguide, the first optical waveguide and the second optical waveguide having different mode fields;
- a bridge body bridging the first optical waveguide and the second optical waveguide;
- a support having an upper surface and a lower surface, wherein the upper surface is coupled to the bridge body, and wherein a gap is disposed in a center part of the lower surface;
- and
- an optical body in a propagation path of light between the first optical waveguide and the second optical waveguide, wherein the optical body is joined to a lower side of the gap of the support and is configured to change a course of radiation mode light emitted from the first optical waveguide and propagating in a direction away from an optical axis thereof to obtain waveguide mode light passing through the optical body.
Dependencies are inferred from the claim text.